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Tenders

CUE & Butterfly House Decarbonisation

Open
Deadline
160 days left
September 03, 2026
Contract Details
Category
Restricted Procedure
Reference
024762-2026
Value
£1,080,000
Location
London, United Kingdom
Published
March 19, 2026
CPV Code
Project Timeline

Tender Published

March 18, 2026

Deadline for Questions

August 27, 2026

Submission Deadline

September 03, 2026

Contract Start Date

September 03, 2026

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Budget
£1,080,000
Duration
19 months
Location
London
Type
Restricted Procedure
75
Quality Score/100
Good

Original Tender Description

The Butterfly House and Centre for Understanding the Environment (CUE) are located within the wider Horniman Gardens site, which is a Grade II listed Park and Garden. The CUE was constructed in 1995 and was originally intended as a temporary structure with an expected lifespan of 20 years. The Butterfly House was constructed in 2016 as glasshouse for tropical plants and butterflies. The Horniman wish to engage a Main Contractor who will manage and deliver the implementation of the decarbonisation of the above buildings in the listed setting. The works will be let on the basis of traditional JCT contract intermediate form without quantities, but with some contractor design elements. As part of the Horniman's Climate and Ecology Manifesto we have made a commitment to become Greenhouse Gas Neutral by 2040. The key objective of this project is to move us towards this goal by doing the following: • Butterfly House: Replacing the gas cabinet air heater with air-to-air Air Source Heat Pumps (ASHPs). • Butterfly House: Thermal performance and air tightness improvement by replacing existing glass and acrylic with triple layer polycarbonate cladding to existing steel structure with new aluminum glazing bars, window and vents. • Butterfly House: Thermal performance and carbon reduction by installation of new trench heating with new Air Handling Unit and visitor path surface or as an alternative an fan-coil system • CUE: Replacing the gas boiler in the Centre for Understanding the Environment (CUE) building with air-to-water Air Source Heat Pumps. • CUE: Improve the thermal performance and air tightness improvement by draught proofing and thermal bridge mitigation including floor, wall and roof new thermal insulation. • CUE: Install Mechanical Ventilation Heat Recovery (MVHR) • Upgrading the electrical cables inside both the Butterfly House and CUE building.

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Requirements & Qualifications

16 requirements across 5 categories

Submission (3)
Mandatory (1)
Compliance (3)
Technical (8)
Financial (1)
SUBMISSION REQUIREMENTS3
--The tender is for a Restricted type.
--The duration of the contract is 19 months.
--The deadline for submission is 2026-09-04T00:00:00+01:00.
MANDATORY EXCLUSION GROUNDS1
--No specific mandatory exclusion grounds are detailed in the provided text.
ELIGIBILITY REQUIREMENTS3
--Must be a Main Contractor.
--Capable of managing and delivering the implementation of decarbonisation works.
--Works will be let on the basis of traditional JCT contract intermediate form without quantities, but with some contractor design elements.
TECHNICAL CAPABILITY REQUIREMENTS8
--Experience in decarbonisation projects within listed settings.
--Experience in replacing gas cabinet air heaters with air-to-air Air Source Heat Pumps (ASHPs).
--Experience in improving thermal performance and air tightness, including replacing glass/acrylic with triple layer polycarbonate cladding, installing new aluminum glazing bars, windows, and vents.
FINANCIAL REQUIREMENTS1
--The estimated value of the tender is 1080000 EUR.

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75
Good

Tender Quality Score

This tender for the Horniman Museum's decarbonisation project is generally well-structured, with clear technical requirements and a reasonable estimated value. However, it lacks specific evaluation criteria and details on the submission process, impacting its overall practicality and legal compliance.

Score Breakdown

Legal Compliance75/100

The tender adheres to basic legal requirements by providing a reference number, organization, estimated value, and CPV code. The procedure type is specified. However, the absence of explicit evaluation criteria and a missing reveal date are notable omissions that could affect legal compliance and transparency. The deadline, while provided, might be considered tight given the scope and the need for contractor design elements.

Missing reveal date
No evaluation criteria specified
Clarity80/100

The description of the project is clear, detailing the specific decarbonisation works required for both the Butterfly House and the CUE building. The technical requirements are well-defined, outlining the expected experience and capabilities of potential contractors. The contract type and duration are also clearly stated.

Completeness70/100

Most essential information is present, including the title, organization, estimated value, contract duration, and CPV code. The description is detailed. However, the lack of available content for the tender documents and the absence of specified evaluation criteria detract from its completeness.

No document content available
Fairness85/100

The tender appears fair, with a disclosed estimated value and objective technical requirements. The procedure is competitive. The main concern regarding fairness is the lack of transparency in the evaluation process due to missing criteria. The restricted nature of the tender implies a pre-selection process, which is standard but should be clearly defined.

Practicality65/100

The tender specifies a contract start date that coincides with the submission deadline, which is highly impractical and likely an error. The absence of information regarding e-submission methods and the lack of accessible document content further reduce practicality. While the value is disclosed, financing information is not.

Contract start date coincides with submission deadline
No e-submission specified
Data Consistency90/100

Key fields such as title, reference, organization, estimated value, and CPV code are populated. Dates are provided, although the contract start date is problematic. There are no indications of suspension or disputes. The overall data is logically presented, with the exception of the overlapping start and submission dates.

Contract start date coincides with submission deadline
Sustainability50/100

The core objective of the tender is decarbonisation, aligning with environmental goals. However, there is no explicit mention of green procurement criteria beyond the project's inherent nature, no specific social aspects, and no focus on innovation. It is also not indicated as EU funded.

Not explicitly green procurement beyond project scope
No social criteria mentioned

Strengths

Clear and detailed technical requirements
Well-defined project scope and objectives
Disclosed estimated value and CPV code
Competitive procedure

Concerns

Impractical contract start date
Missing evaluation criteria
Lack of information on e-submission
No document content available

Recommendations

1. Clarify the contract start date and ensure it is distinct from the submission deadline.
2. Provide detailed evaluation criteria to enhance transparency and fairness.
3. Specify the e-submission process and make tender documents accessible.

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